Question:

Is having a IQ of 138 good?

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I had IQ test a my school.

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  1. Its beyong average but you're not looking to smart to me if you cant make your own research before you ask a question that already has an answer.

    TonyPags answer :

    IQ scores are expressed as a number normalized so that the average IQ in an age group is 100. In other words, an individual scoring 115 is above average when compared to people in the same age group. It is common practice to standardize so that the standard deviation (σ) of scores is 15, although some IQ tests use difference scales (for example, the Stanford Binet IQ test uses a standard deviation of 16, and the Cattell IIIB test uses a standard deviation of 24). Tests are designed so that the distribution of IQ scores is Gaussian; that is, it follows a bell curve. A difference has been documented between the IQ score distributions of left-handed and right-handed test subjects; the distribution in left-handed people tends to cluster at the two extremes of the IQ scale.

    (The following numbers apply to IQ scales standard deviation σ = 15.) Roughly 68% of the population has an IQ between 85 and 115. The "normal" range, or range between −2 and +2 standard deviations from the mean, is between 70 and 130, and contains about 95% of the population. An accurate score below 70 may indicate mental retardation, and a score above 130 may indicate intellectual giftedness. Retardation may result from normal variation or from a genetic or developmental malady; analogously, some otherwise normal people are very short, and others have dwarfism. Giftedness appears to be normal variation; autistic savants have often astonishing cognitive powers but below-average IQ's.

    It has been observed that scores outside the range 55 to 145 must be cautiously interpreted because there are smaller numbers of respondents with which to make comparisons in those ranges. Moreover, at such extreme values, the normal distribution is a less accurate estimate of the true IQ distribution.

    In actuality there is a higher percentage of the population measured at 3 or more standard deviation levels on the test than the probabilities of the normal distribution would predict. Some IQ scoring procedures may attempt to integrate such clusters of statistical outliers into the curve by adjusting the scores so that they better represent actual probabilities (according to Silverman) and in these cases, scores around 145 and above may actually have been notably higher, were they not so adjusted.

    Most IQ tests in the United States tend to use a SD-15 or SD-16 scale, meaning that one standard deviation corresponds to +/- 16 points on the IQ scale. However, European IQ tests tend to use a SD-24 or SD-25 scale, resulting in discrepancies. Therefore, an IQ of 130 (+2 standard deviations) in the U.S. might correspond to an IQ of 148-150 in Europe. Due to these differences, percentiles are more accurate measurements than IQ numbers.


  2. Man, it's totally amazing. What are you, a genius or something.

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